Recommended dose:Suggested starting usage is 10mg ,need use it 25-60minutes before having sex.

In clinical trials, having sex to take 4 to 5 hours before, still display effect.Medication frequency limit for once a day. ,not affected by eating.Need to sexual stimulation effect to make this product effect

Dose range:The dosage is from 5 to 20 mg/day, according to the constitution of different dosage. Adjust the dosage according to the different physical

Side effects:

1.Liver damage,

child-pugh A :Don't need to adjust the dosage

child-pugh B:As Vardenafil's clearance to reduce, advice start from 10mg,then according to the tolerability and efficacy gradually increased to 10 mg.